6. If the quartile deviation of a set of observations is 10
and the third quartile is 35, then the first quartile is
(a) 24
(b) 30
(C)17
(d) 15
Plsss
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Answer:
Correct option is
D
15
Quartile Deviation (Q
D
) means the semi variation between the upper quartile or third quartile (Q
3
) and lower quartile or first quartile (Q
1
) in a distribution.
Formula = Q
D
=
2
Q
3
−Q
1
Given, Q
D
=10 and Q
3
=35
10=
2
35−Q
1
Q
1
=15
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